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EP2131500A3 - Atomic beam tube with counter propagating optical or atomic beams - Google Patents

Atomic beam tube with counter propagating optical or atomic beams Download PDF

Info

Publication number
EP2131500A3
EP2131500A3 EP08168664A EP08168664A EP2131500A3 EP 2131500 A3 EP2131500 A3 EP 2131500A3 EP 08168664 A EP08168664 A EP 08168664A EP 08168664 A EP08168664 A EP 08168664A EP 2131500 A3 EP2131500 A3 EP 2131500A3
Authority
EP
European Patent Office
Prior art keywords
atomic
beams
counter propagating
optical
atoms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08168664A
Other languages
German (de)
French (fr)
Other versions
EP2131500A2 (en
Inventor
Filippo Levi
Avinoam Stern
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Accubeat Ltd
SEPA - Sistemi Elettronici Per Automazione SpA
SEPA Sistemi Elettronici per Automazione SpA
Original Assignee
Accubeat Ltd
SEPA - Sistemi Elettronici Per Automazione SpA
SEPA Sistemi Elettronici per Automazione SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Accubeat Ltd, SEPA - Sistemi Elettronici Per Automazione SpA, SEPA Sistemi Elettronici per Automazione SpA filed Critical Accubeat Ltd
Priority to EP08168664A priority Critical patent/EP2131500A3/en
Publication of EP2131500A2 publication Critical patent/EP2131500A2/en
Publication of EP2131500A3 publication Critical patent/EP2131500A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/26Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
    • GPHYSICS
    • G04HOROLOGY
    • G04FTIME-INTERVAL MEASURING
    • G04F5/00Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/14Apparatus for producing preselected time intervals for use as timing standards using atomic clocks
    • G04F5/145Apparatus for producing preselected time intervals for use as timing standards using atomic clocks using Coherent Population Trapping

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ecology (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

An atomic beam tube for frequency standard which employs either counter propagating optical beams or counter propagating atomic beams and Coherent Population Trapping (CPT) is disclosed. Atoms selected from the group consisting of the alkali metal family (Cesium, Rubidium, Potassium, Sodium and Lithium) are emitted from one or two sources to form a single or double atomic beams. The atoms interact with the optical beams at two crossing points. The optical beams are generated by a laser and are modulated at half the hyperfine frequency. The optical beam is splitted into two counter propagating beams in round paths which interact with the atomic beam at two interaction regions. The interaction with the light causes the atoms to enter a CPT state. A dark line in the fluorescence at the second crossing is used to lock an RF oscillator to the atomic hyperfine transition.
EP08168664A 2008-06-02 2008-11-07 Atomic beam tube with counter propagating optical or atomic beams Withdrawn EP2131500A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08168664A EP2131500A3 (en) 2008-06-02 2008-11-07 Atomic beam tube with counter propagating optical or atomic beams

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12903908P 2008-06-02 2008-06-02
EP08168664A EP2131500A3 (en) 2008-06-02 2008-11-07 Atomic beam tube with counter propagating optical or atomic beams

Publications (2)

Publication Number Publication Date
EP2131500A2 EP2131500A2 (en) 2009-12-09
EP2131500A3 true EP2131500A3 (en) 2012-03-07

Family

ID=41137475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08168664A Withdrawn EP2131500A3 (en) 2008-06-02 2008-11-07 Atomic beam tube with counter propagating optical or atomic beams

Country Status (2)

Country Link
US (1) US20090302957A1 (en)
EP (1) EP2131500A3 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7965148B2 (en) * 2009-08-03 2011-06-21 Northrop Grumman Guidance And Electronics Company, Inc. Atomic frequency clock systems and methods
WO2011026251A1 (en) * 2009-09-04 2011-03-10 Csem Centre Suisse D'electronique Et De Microtechnique S.A. Device for an atomic clock
WO2011026252A1 (en) 2009-09-04 2011-03-10 Csem Centre Suisse D'electronique Et De Microtechnique S.A. Device for an atomic clock
CN101847994B (en) * 2010-05-05 2012-04-04 中国科学院武汉物理与数学研究所 Method and device for implementing Ramsey-CPT atomic frequency standard by microwave periodic On-Off modulation VCSEL
CN102778839B (en) * 2011-12-20 2013-10-09 中国科学院武汉物理与数学研究所 Physical system device of passive type CPT (Coherent Population Trapping) atomic clock
CN102799101B (en) * 2012-02-15 2013-09-18 中国科学院武汉物理与数学研究所 Physical system device for chip coherent population trapping (CPT) atomic clock
CN103825168B (en) * 2014-02-27 2016-08-17 北京大学 A kind of method being obtained light comb by er-doped mode locked fiber laser
EP3182228B1 (en) 2015-12-15 2020-07-15 ADVA Optical Networking SE Random light collector and detection device
US9976955B2 (en) * 2016-01-06 2018-05-22 Arizona Board Of Regents On Behalf Of Arizona State University Sub-doppler intermodulated laser-induced-fluorescence spectrometer
US10539929B2 (en) * 2016-10-11 2020-01-21 Northrop Grumman Systems Corporation Atomic clock system
CN107065502B (en) * 2016-12-12 2019-08-23 兰州空间技术物理研究所 A kind of method and magnetic separation state cesium-beam atomic clock extending the magnetic separation state cesium beam tube service life
CN106773612B (en) * 2017-01-12 2019-09-20 中国科学院上海光学精密机械研究所 Improve the system and method for atomic frequency stability
CN107577138B (en) * 2017-09-27 2020-01-10 兰州空间技术物理研究所 Vacuum design method of sealed cesium-beam tube
FR3072791B1 (en) * 2017-10-23 2019-10-18 Thales ATOMIC CLOCK WITH OPTICAL PUMPING AND METHOD OF MANUFACTURING THE SAME
US11004009B2 (en) * 2018-01-04 2021-05-11 University Of Maryland, College Park Optical control of atomic quantum bits for phase control of operation
CN108121015B (en) * 2018-01-25 2024-03-29 中国科学技术大学 Atomic population detection system
CN108832926B (en) * 2018-07-09 2021-12-10 北京无线电计量测试研究所 Integrated atomic beam type optical frequency standard
JP6650647B2 (en) * 2018-07-31 2020-02-19 日本航空電子工業株式会社 Cooled atom beam generation method, cooled atom beam generator, atomic interferometer
CN110515290B (en) * 2019-07-17 2020-12-22 北京大学 Laser frequency stabilization method and optical system for improving performance of optical pumping cesium beam atomic clock
CN110515291B (en) * 2019-09-02 2020-11-10 温州激光与光电子协同创新中心 Atomic beam optical clock for pulse wide spectrum clock laser detection and implementation method thereof
GB2595746B (en) * 2020-10-29 2022-06-01 Univ Southampton Atomic cooling and trapping methods and apparatus
CN112650043B (en) * 2020-12-01 2022-01-21 兰州空间技术物理研究所 Compact cold atomic clock for ground
CN113835330B (en) * 2021-08-19 2022-08-12 成都天奥电子股份有限公司 Cesium beam atomic clock based on coherent population trapping technology
CN113917829B (en) * 2021-11-03 2022-10-18 北京大学 Light collector for cesium-beam atomic clock and cesium-beam atomic clock
CN114370813B (en) * 2021-12-28 2023-11-14 北京无线电计量测试研究所 U-shaped microwave cavity electrical symmetry detection device
CN114659470B (en) * 2022-03-23 2024-08-02 北京无线电计量测试研究所 Device and method for measuring atomic beam collimation characteristic of calcium atom Shu Guangzhong
CN114864127B (en) * 2022-04-29 2023-03-17 中国科学院精密测量科学与技术创新研究院 Glass vacuum cavity device for integrated two-dimensional laser cooling atoms
CN115079552B (en) * 2022-07-15 2024-03-29 中国科学院国家授时中心 Double atomic clock and Ramsey cavity shared by double atoms thereof
CN117790042B (en) * 2024-02-27 2024-05-28 中国科学院国家授时中心 Optical pumping atomic beam device based on curved four conductors

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107226A (en) * 1991-01-30 1992-04-21 Frequency Electronics, Inc. Atomic frequency standard using optical pumping for state preparation and magnetic state selection of atoms
US20080042761A1 (en) * 2004-02-18 2008-02-21 William Happer Method and system for operating a laser self-modulated at alkali-metal atom hyperfine frequency

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4323860A (en) * 1980-03-27 1982-04-06 The United States Of America As Represented By The Secretary Of The Air Force Laser excited molecular beam time and frequency standard
US6255647B1 (en) 1999-03-09 2001-07-03 Kernco, Inc. Atomic frequency standard based on coherent state preparation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107226A (en) * 1991-01-30 1992-04-21 Frequency Electronics, Inc. Atomic frequency standard using optical pumping for state preparation and magnetic state selection of atoms
US20080042761A1 (en) * 2004-02-18 2008-02-21 William Happer Method and system for operating a laser self-modulated at alkali-metal atom hyperfine frequency

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DONGHAI YANG ET AL: "Light frequency shift in small optically pumped cesium beam frequency standards", FREQUENCY CONTROL SYMPOSIUM, 1997., PROCEEDINGS OF THE 1997 IEEE INTERNATIONAL. ORLANDO, FL, USA 28-30 MAY 1997, NEW YORK, NY, USA,IEEE, US, 28 May 1997 (1997-05-28), pages 228 - 233, XP010257440, ISBN: 978-0-7803-3728-2, DOI: 10.1109/FREQ.1997.638549 *

Also Published As

Publication number Publication date
EP2131500A2 (en) 2009-12-09
US20090302957A1 (en) 2009-12-10

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